This healthy weight calculator estimates an adult weight range from height using the standard BMI band 18.5 to 24.9. Enter height in centimeters. The tool returns a lower and upper weight in kilograms for that height.
BMI is a screening measure, not a diagnosis. For a single formula target by height and sex, use the ideal weight calculator. To check BMI from both height and weight, use the BMI calculator.
Inputs
- Height (cm): default 170.
- Output: healthy weight range in kg for BMI 18.5 to 24.9.
Formula
Convert height to meters: m = height in cm / 100. Then low kg = 18.5 * m * m and high kg = 24.9 * m * m.
Worked example
Height = 170 cm. m = 1.70. m squared = 2.89. Low = 18.5 * 2.89 = 53.465 kg (about 53.5 kg). High = 24.9 * 2.89 = 71.961 kg (about 72.0 kg).
How to read the result
Weights inside the band map to the common adult healthy BMI range. Below the low edge is underweight BMI. Above the high edge is overweight or higher. High lean mass can push weight above the band with low body fat.
Assumptions and limits
- Adult BMI cut points only. Child charts differ.
- Measure height carefully. Shoes add error.
- This tool does not take imperial height as an input.
Frequently asked questions
Is healthy weight the same as ideal weight?
No. Ideal weight formulas estimate one target. This page reports the full BMI 18.5 to 24.9 band.
What about calories after I know a range?
Plan intake with the TDEE calculator or the calorie calculator.